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Finding the Fourth Proportional to 18,676.62, 28,014.49 and 4,636.69

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Solution

The fourth proportional to 18,676.62, 28,014.49 and 4,636.69 is: 6,954.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.62 : 28,014.49 = 4,636.69 : x
  2. Step 2: Convert to fraction form
    18,676.62/28,014.49 = 4,636.69/x
  3. Step 3: Cross multiply
    18,676.62x = 28,014.49 × 4,636.69
  4. Step 4: Simplify right side
    18,676.62x = 129,894,505.64
  5. Step 5: Solve for x
    x = 129,894,505.64/18,676.62
  6. Step 6: Final answer
    x = 6,954.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.